GM 9413427
Pinion Bearings

The drive Pinion Bearing replacement process requires specific tools which include j7817 (Outer Bearing Race Installer), j8092 (Universal Driver Handle- 3/4 inch -10), j8608 (Rear Pinion Bearing Race Installer), j8611-01 (Rear Pinion Bearing Race Installer), j8614-01 (Flange and Pulley Holding Tool), j22912-01 (Split-Plate Bearing Puller), j24433 (Pinion Cone and Side Bearing Installer), j33782 (Pinion Oil Seal Installer), and j38694 (Extension Housing Oil Pump/Seal Installer). To start the process you must elevate the vehicle while taking out the drive pinion and Differential from the axle. The j22912-01 tool will extract the bearing from the pinion before removing the shim and both Pinion Bearing cups from the axle housing by applying gentle hammer blows with a brass drift. Install the outer Pinion Bearing cup via j7817 or j8611-01 combined with j8092 and the inner Pinion Bearing cup requires usage of j8608 and j8092. Install the determined selective shim in the correct position between the inner Pinion Bearing and the gear shoulder. First install the inner Pinion Bearing using j24433 which must sink onto the pinion shim, after which install a new collapsible spacer and apply mugelator to pinion bearings with proper axle lubricant. The axle housing receives the pinion after which you must install the outer Pinion Bearing followed by a new pinion oil seal with use of the j33782 or j38694. Sealant gm p/n 12346004 or canadian p/n 10953480 should be applied to the splines of the pinion yoke before installing it with a soft-faced hammer and relaying the marks from removal. Begin by placing the washer and new pinion nut in position and tighten them with the j8614-01 while adjust the yoke until pinion end play has just been reached. The pinion rotating torque should be between 1.0 - 2.8 nm (10 - 25 inch lbs.) for used bearings and 1.7 - 3.4 nm (15 - 30 inch lbs.) for new bearings when installing the pinion nut while following the proper torque measurement. The specified torque should be reached on the pinion before rotating it multiple times to verify bearing seating then torque should be checked and readjusted if necessary. The procedure concludes with axle lubricant installation followed by reinstalling brakes then tires and tires and finally lowering the vehicle.

Article j 22761 and j 8614-01 will be necessary to perform drive Pinion Bearing replacements on a 10.5-inch axle. The tool list expands to article j 37624 and j 24433, j 22912-b, j 44414, j 8608, and j 8092. Start by elevating the vehicle then proceed to take out the Differential assembly followed by the pinion gear bearing retainer and then the pinion yoke and oil seal. Remove the outer and inner pinion bearings together with the collapsible spacer and pinion gear pilot bearing. The Differential side bearing installer (J 22761) must be used to install the pinion gear pilot bearing while the Pinion Bearing installer (J 37624) and universal driver handle - 3/4 in - 10 (J 8092) are needed for the inner Pinion Bearing cup then the rear Pinion Bearing installer (J 8608) with universal driver handle - 3/4 in - 10 (J 8092) for the outer Pinion Bearing cup installation. The installation process starts with using a pinion cone and side bearing installer (J 24433) to add the inner Pinion Bearing. Afterward, install a new collapsible spacer and apply lubrication to the pinion bearings. The system requires the following procedure: install an outer Pinion Bearing and then a new pinion oil seal while using the rear axle pinion oil seal installer (J 44414) and then place the pinion within the bearing retainer. Use sealant gm p/n 12346004 or canadian p/n 10953480 on the pinion yoke splines then install the yoke and tighten the pinion nut while keeping the flange and pulley holding tool (J 8614-01) until the pinion end play reaches its limit. Install the original shim or substitute with a 0.41 mm shim if unavailable on the flange and pulley holding tool (J 8614-01). Secure the pinion gear bearing retainer in place to the axle housing with bolts fastened to 88 nm (65 ft. Lbs.). Verify that the pinion rotating torque meets the specified values by adjusting as required. After rebuilding the Differential assembly drivers must adjust the Differential side bearing preload followed by selecting appropriate drive pinion shims and adjusting backlash before filling with lubricant and lowering the vehicle.

You need the following equipment to work on the Differential side bearings: some of the needed tools are the j8092 universal driver handle, the j21784 side bearing installer, the j22888-d side bearing remover kit, the j24430 Differential side bearing installer, the j36597 side bearing puller pilot - 9.25 inch, the j45711 Differential side bearing remover- dana 248, the j45900 Differential side bearing installer - dana you should begin the process by taking off the Differential assembly. When working on the 8.6 inch or 10.5 inch axle with rpo g80, put the Differential assembly in a vise, use the j22888-20a and j8107-4 for the 8.6-inch or j8107-3 for the 10.5 inch, both as shown, and follow up by removing the side bearing with the j22888-20a. After taking the Differential out of the vise, use the j45711 and j36597 as shown on the 9.75 inch axle, and take out the side bearing with the j45711 and a hydraulic press. Take apart the 10.5 inch axle without rpo g80 by taking the Differential side bearing cage and roller bearings off the inner bearing race, then carefully remove the inner bearing race without damaging the Differential case. Protect the Differential case by using the j8107-4 for the 3.6 inch axle, j36597 for the 9.75 lay the bearing on the Differential case, then put the side bearing installer from the j8092 onto the Differential side bearing and lower it in place. For the 8.6 inch axle, use j21784, and if you have 9.75 inch or 10.5 inch with no rpo g80, use j24430 or j45900, but for the 9.75 inch with rpo g80 use dt46725. Use the suitable installer and j8092 to drive the bearing onto the Differential case, and afterwards secure the Differential assembly.

The process of swapping drive pinion bearings in rear drive axles starts with vehicle elevation and Differential and drive pinion removal from the axle. The split-plate bearing puller (J 22912-01) should be used to push off the bearing which sits on the pinion before you can remove the shim. When extracting bearings from the axle housing work evenly with a hammer against a brass drift to remove the outer cup followed by the inner cup extraction. The installation of the outer Pinion Bearing cup requires an outer bearing race installer (J 7817) and universal driver handle (J 8092) while the installation of the inner Pinion Bearing cup needs a rear Pinion Bearing race installer (J 8608) with the universal driver handle (J 8092). Insert the selective shim of the chosen thickness between the inner Pinion Bearing and gear shoulder. Execute the inner Pinion Bearing installation with pinion cone and side bearing installer j 24433 while pushing it down until the cone completely seats onto the pinion shim. The installation process requires a new collapsible spacer with proper axle lubricant application to the pinion bearings. Place the axle housing pinion next to the outside bearing before adding both components. The pinion oil seal installer (J 33782) must be used for new pinion oil seal installation before applying gm p/n 12346004 (Canadian P/N 10953480) sealant to the pinion yoke splines and placing the yoke in position. Finally, match attaining alignment along the original marks. Drive the pinion yoke onto the pinion shaft using a soft-faced hammer until it shows a few threads. Subsequently add the washer and brand-new pinion nut. Using the holding tool (J 8614-01) on the pinion yoke secure it while tightening the pinion nut until the end play reaches its minimal point. A mechanic should use an inch-pound torque wrench to measure pinion rotating torque at 1.0 to 2.8 nm (10 to 25 inch lbs.) for used bearings or 1.7 to 3.4 nm (15 to 30 inch lbs.) for new bearings. Tighten the pinion nut by small amounts until its rotating torque matches the specified range. Use the torque meter to check the specified value before rotating the pinion at least three times to check bearing seating. Make additional adjustments if required. The vehicle requires reinstallation of its Differential before lubricating the axle with proper fluid then proceeding to lower the vehicle.

To replace the drive pinion bearings on 8.6, 9.5, and 11.5 inch axles, the following tools are required: j 7818 (Inner Bearing Race Installer), j 8092 (Universal Driver Handle - 3/4 in - 10), j 8611-01 (Rear Pinion Bearing Race Installer), j 8614-01 (Flange and Pulley Holding Tool), j 22306 (Pinion Cup Bearing Installer - Rear), j 22912-b (Split Plate Bearing Puller), j 22828 (Input/Counterbalance Race Installer), dt-47688 (Pinion Bearing Remover, 8.6 Inch Axle Installer), j 36614 (Inner Pinion Bearing Installer), and j 45870 (Pinion Bearing Cup Installer). You should begin this process by elevating the vehicle before taking off its Differential assembly. Extract both the drive pinion from the axle by applying the dt-47688 with press equipment to pull the bearing out. You need to use a hammer and brass drift to eliminate the shim and inner and outer Pinion Bearing cups from the axle housing. The installation needs the j 8611-01 or j 7818 for the outer Pinion Bearing cup together with the j 45870 or j 22306 for the inner Pinion Bearing cup and the j 8092. Use the dt-47688 with a press to extract the bearing from the drive pinion. Add the determined selective shim thickness between the shoulder of the gear and the inner Pinion Bearing. The installation process requires the j 24433 or j 36614 to fit the inner Pinion Bearing by allowing it to position correctly on the pinion shim. You should install a new collapsible spacer after lubricating the pinion bearings before putting the outer Pinion Bearing inside the axle housing. The procedure requires you to apply sealant to pinion yoke splines after using the j 22388 to install a new pinion oil seal followed by pinion axle housing installation. Reestablish networking marks for alignment before using the j 24433 to install the inner Pinion Bearing between the pinion shoulder and its specified shim. Use a soft-faced hammer to fit the pinion yoke onto its shaft before adding a new washer and pinion nut. A technician should apply torque to the pinion nut through the j 8614-01 while maintaining the pinion yoke static to consume all end play in the pinion. While torquing the assembly, the technician needs to spin the pinion to seat the bearings. Use the j 8614-01 tool to check the rotating torque of the pinion and verify that it meets the defined used or new bearing specifications or adjust until it does. After substituting the Differential assembly, add lubricant then fully lower the vehicle down.

First raise the vehicle before removing the tire units along with the wheels and calipers and rotors need to be removed. Take out the drive pinion from the axle after removing the Differential assembly together with axle shafts. When working with 7.6 inch axles the split plate bearing puller (J22912-01) will help press the bearing off the pinion. Because of their different axle lengths, Pinion Bearing remover (J45871) needs to be placed around the Pinion Bearing while split plate bearing puller (J22912-01) must be positioned upside down around the Pinion Bearing remover before you press off the bearing combination of both tools. Apply a hammer and brass drift to remove the shim and the outer and inner Pinion Bearing cups from the axle housing. When installing the outer Pinion Bearing cup on 7.6 inch axles use the outer bearing race installer (J7817) combined with the driver handle (J8092). The rear Pinion Bearing race installer (J8611-01) works with the same driver handle for installing the outer cup on all 8.6 inch axles. Insert the inner Pinion Bearing cup through the use of the rear Pinion Bearing cup installer (J29609) for 7.6 inch axles or the Pinion Bearing cup installer (J45870) for 8.6 inch axles along with the driver handle (J8092). Install the pinion shim between the inner Pinion Bearing and the gear shoulder while using the determined selective thickness. The rear Pinion Bearing race installer (J5590) suffices for 7.6 inch axles whereas the pinion cone and side bearing installer (J24433) serves 8.6 inch axles to press the inner Pinion Bearing until the cone securely seats on the pinion shim. The pinion needs a new collapsible spacer and suitable axle lubrication before the pinion housing receives it. You should begin by adding the outer Pinion Bearing together with the new pinion oil seal and the pinion flange/yoke. Complete the rebuild by adding the Differential parts, brake components, assembling wheels with tires, followed by lubricant addition before performing the vehicle drop.

You need the following equipment to work on the Differential side bearings: some of the needed tools are the j8092 universal driver handle, the j21784 side bearing installer, the j22888-d side bearing remover kit, the j24430 Differential side bearing installer, the j36597 side bearing puller pilot - 9.25 inch, the j45711 Differential side bearing remover- dana 248, the j45900 Differential side bearing installer - dana you should begin the process by taking off the Differential assembly. When working on the 8.6 inch or 10.5 inch axle with rpo g80, put the Differential assembly in a vise, use the j22888-20a and j8107-4 for the 8.6-inch or j8107-3 for the 10.5 inch, both as shown, and follow up by removing the side bearing with the j22888-20a. After taking the Differential out of the vise, use the j45711 and j36597 as shown on the 9.75 inch axle, and take out the side bearing with the j45711 and a hydraulic press. Take apart the 10.5 inch axle without rpo g80 by taking the Differential side bearing cage and roller bearings off the inner bearing race, then carefully remove the inner bearing race without damaging the Differential case. Protect the Differential case by using the j8107-4 for the 3.6 inch axle, j36597 for the 9.75 lay the bearing on the Differential case, then put the side bearing installer from the j8092 onto the Differential side bearing and lower it in place. For the 8.6 inch axle, use j21784, and if you have 9.75 inch or 10.5 inch with no rpo g80, use j24430 or j45900, but for the 9.75 inch with rpo g80 use dt46725. Use the suitable installer and j8092 to drive the bearing onto the Differential case, and afterwards secure the Differential assembly.

To replace the drive pinion bearings on 8.6, 9.5, and 11.5 inch axles, the following tools are required: j 7818 (Inner Bearing Race Installer), j 8092 (Universal Driver Handle - 3/4 in - 10), j 8611-01 (Rear Pinion Bearing Race Installer), j 8614-01 (Flange and Pulley Holding Tool), j 22306 (Pinion Cup Bearing Installer - Rear), j 22912-b (Split Plate Bearing Puller), j 22828 (Input/Counterbalance Race Installer), dt-47688 (Pinion Bearing Remover, 8.6 Inch Axle Installer), j 36614 (Inner Pinion Bearing Installer), and j 45870 (Pinion Bearing Cup Installer). Raising the vehicle first allows access to Differential assembly removal. The dt-47688 tool should be used to extract the drive Pinion Bearing while separating it from the axle before removing this component. You should remove the shim followed by the outer and inner Pinion Bearing cups from the axle housing by using a hammer together with a brass drift. The installation requires j 8611-01 or j 7818 for the outer Pinion Bearing cup together with j 45870 or j 22306 and j 8092. Cut the drive pinion selective shim according to measurements then place it between the inner Pinion Bearing and gear shoulder. Place the inner Pinion Bearing by using j 24433 or j 36614 before adding a new collapsible spacer. Perform lubrication of the pinion bearings next. Put the outer Pinion Bearing inside the axle housing followed by insertion of new pinion oil seal through use of j 22388 tool. The service technician should install the pinion into its housing along with pinion sealant application to the yoke splines before installing the yoke while matching alignment marks used for removal. Place the pinion yoke onto the pinion shaft before installing both the washer along with a new pinion nut. The technician should use the j 8614-01 clamp to stabilize the pinion yoke during nut tightening procedures until the proper pinion end play is achieved while maintaining continuous pinion rotation. The measuring tool for pinion rotating torque should reach 1.0-2.3 n.m (10-20 lb in) for used bearings or 1.7-3.4 n.m (15-30 lb in) for new bearings. Adjustments can be made according to these settings. Repeated pinion rotations following the torque specification help seat the bearings before another torque measurement check is performed. The Differential assembly should be reinstalled and the axle should be filled with its proper lubricant then the vehicle needs to be lowered.

After removing the Flange and Pulley Holding Tool (J 8614-01), install the original shim or a 0.41 mm (0.016 inch) shim if the original is unavailable, then attach the pinion gear bearing retainer to the axle housing and tighten the retainer bolts to 88 Nm (65 ft. lbs.).

Use J 7817 for the 8.0 inch axle, J 8611-01 for the 8.6 inch axle, or J 7818 for the 9.5 LD inch axle, along with J 8092.

Install the J45711 and the J36597, then use the J45711 and a hydraulic press to remove the bearing, ensuring to mark the inboard shims as left or right.

Determine the selective shim thickness for the drive pinion.

Install the differential assembly, fill the axle with lubricant, and lower the vehicle.

Use the J 22912-01 to press the bearing off.

Inner Bearing Race Installer (J 7818), Universal Driver Handle - 3/4 in - 10 (J 8092), Rear Pinion Bearing Race Installer (J 8611-01), Flange and Pulley Holding Tool (J 8614-01), Pinion Cup Bearing Installer - Rear (J 22306), Split Plate Bearing Puller (J 22912-B), Pinion Cone and Side Bearing Installer (J 24433), Inner Pinion Bearing Installer (J 36614), and Pinion Bearing Cup Installer (J 45870).

Place the oil deflector into the inner pinion cup bore, then install the inner pinion bearing cup with the J 45704 and J 8092, followed by the outer pinion bearing cup using the J 7818 and J 8092.

After confirming the specified torque, rotate the pinion several times to ensure proper seating of the bearings, recheck the torque, and adjust if necessary. Finally, reinstall the differential assembly, adjust the differential side bearing preload, determine the selective shim thickness for the drive pinion, adjust the backlash, fill the axle with lubricant, and lower the vehicle.

The required tools are: J22888-D Side Bearing Remover Kit, J24430 Differential Side Bearing Installer, J36597 Side Bearing Puller Pilot - 9.25 inch, J45711 Differential Side Bearing Remover - Dana 248, J45900 Differential Side Bearing Installer - Dana Axles, and J8092 Universal Driver Handle - 3/4 inch - 10.

Start with the pinion gear pilot bearing using the Differential Side Bearing Installer (J 22761).

Begin by removing the differential assembly and securing it in a vise.

Install a new collapsible spacer, lubricate the pinion bearings, and place the outer pinion bearing into the retainer.

Secure the differential assembly in a vise, then install the J22888-20A and either the J8107-4 for the 8.6 inch axle or the J8107-3 for the 10.5 inch axle, and remove the differential side bearing using the J22888-20A.

Next, remove the axle shafts and the differential assembly, then take out the drive pinion from the axle.

Rotate the pinion several times to ensure proper bearing seating, rechecking the torque and adjusting if necessary.

The required tools are: J8092 Universal Driver Handle (J8092), J21784 Side Bearing Installer (J21784), J22888-D Side Bearing Remover Kit (J22888-D), J24430 Differential Side Bearing Installer (J24430), J36597 Side Bearing Puller Pilot - 9.25 inch (J36597), J45711 Differential Side Bearing Remover- Dana 248 (J45711), J45900 Differential Side Bearing Installer - Dana Axles (J45900), and DT46725 Side Bearing Installer (DT46725).

Apply sealant to the splines of the pinion yoke and install the yoke, aligning the marks made during removal.

Begin by removing the differential assembly.

Begin by raising the vehicle and removing the differential assembly, followed by the pinion yoke and oil seal, and then the thrust washer.

A hammer and brass drift are used to extract the outer and inner pinion bearing cups.

Use the Pinion Bearing Cup Installer (J45870) with the Driver Handle (J8092).

Protect the differential case by placing the J8107-2 or J8107-4 on the side opposite the bearing installation.

Use the Flange and Pulley Holding Tool (J 8614-01) to tighten the nut until the pinion end play is just taken up, rotating the pinion while tightening to seat the bearings.

Begin by raising the vehicle and removing the differential assembly, followed by the pinion yoke and pinion oil seal.

Use the J22888-20A and the J8107-4 for the 8.6 inch axle, or the J36597 for the 9.5 inch or 10.5 inch axles to remove the differential side bearings with the J22888-20A.

Tighten the pinion nut while holding the J8614-01 until the pinion end play is just taken up, rotating the pinion to seat the bearings.

Use the J 8614-01 (Flange Holder and Remover) to tighten the pinion nut incrementally.

J 22761 (Side Bearing Installer) and J 8092 (Universal Driver Handle - 3/4 in - 10).

Use a press and the appropriate tool.

Use the Rear Axle Pinion Oil Seal Installer (J 22388) for both axle sizes.

Finally, install the differential assembly, fill the axle with lubricant, and lower the vehicle.

Install the Pinion Driver (J22536) ensuring it is firmly seated on the pinion, then drive the pinion out using the Pinion Driver (J22536) and a hammer, taking care not to let the pinion fall out of the rear axle housing.

Install a new pinion oil seal using the J 22388 or J 44414.

Rotate the pinion several times to ensure the bearings are seated, then recheck the rotating torque and adjust if necessary.

Use J 8608 and J 8092, utilizing J 22306 for the 9.5 LD inch axle.

Determine the selective shim thickness and install it between the inner pinion bearing and the shoulder on the gear.

Use the Extension Housing Oil Pump/Seal Installer (J 38694).

Reinstall the differential assembly, adjust the differential side bearing preload, determine the selective shim thickness for the drive pinion, adjust the backlash, fill the axle with lubricant, and lower the vehicle.

Install a new pinion nut.

Raise the vehicle and remove the differential assembly.

The required tools are J 22761, J 8614-01, J 37624, J 24433, J 22912-B, J 44414, J 8608, and J 8092.

Begin by removing the differential assembly.

Remove the selective pinion shim.

Install the outer pinion bearing into the axle housing and a new pinion oil seal using the appropriate Rear Axle Pinion Oil Seal Installer for the axle size.

Use the appropriate installer (J 8611-01, J 7818, or J 8608) and the J 8092.

Install a new collapsible spacer, lubricate the pinion bearings, and install the outer pinion bearing into the axle housing.

Begin by removing the differential assembly and securing it in a vise.

Begin by raising the vehicle and removing the differential assembly.

The inner pinion bearing can be removed with the J 22912-01 and a hydraulic press, followed by the removal of the pinion position shim.

Reinstall the differential assembly, adjust the differential side bearing preload, determine the selective shim thickness for the drive pinion, adjust the backlash, fill the axle with lubricant, and lower the vehicle.